WP7104SEC/J2 Equivalent & Substitute Parts

Part Overview

The WP7104SEC/J2 is an orange 630nm LED indication component manufactured by Kingbright, designed for through-hole mounting applications. This discrete 2.2V radial LED features a 3mm T-1 form factor with clear domed lens and 5500mcd brightness rating. The component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing production and maintenance applications. Substitute parts must maintain electrical compatibility, mechanical form factor, and performance characteristics within specified tolerances.

Substiute Parts

WP7104SEC/J2

KingbrightIn Stock: 780WP7104SEC/J2 Datasheet

Current PartRFQ

WP710A10SEC/J3

KingbrightIn Stock: 19724WP710A10SEC/J3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WP7104SEC/J2 is determined by strict alignment with the following critical parameters:

Electrical Compatibility Requirements:

• Forward voltage (Vf) must equal 2.2V typical
• Test current must equal 20mA
• RoHS3 compliance mandatory

Mechanical Compatibility Requirements:

• Lens size must be 3mm T-1 form factor
• Mounting type must be through-hole
• Package configuration must be radial
• Physical dimensions: 2.90mm diameter, 5.90mm maximum height
• Lens style must be round with domed top
• Lens transparency must be clear

Performance Parameters:

• Viewing angle tolerance: ±10° acceptable variance
• Millicandela rating: ±15% acceptable variance
• Wavelength dominant: color-specific, determines visual indication function

The substitute part WP710A10SEC/J3 meets all critical electrical and mechanical parameters. The primary functional difference is wavelength-dominant specification (625nm red versus 630nm orange), which reflects the color-specific indication requirement of the application circuit. This substitution is valid only when red indication is functionally equivalent to orange indication in the target application.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitution Path:

WP710A10SEC/J3 is the qualified substitute for WP7104SEC/J2 based on the following engineering criteria:

1. Electrical Compatibility: Forward voltage and test current specifications are identical (2.2V, 20mA), ensuring direct circuit compatibility without modification to current-limiting resistor networks or power supply specifications.

2. Mechanical Compatibility: Physical form factor, mounting configuration, and package dimensions are identical, enabling direct PCB footprint compatibility and mechanical assembly without redesign.

3. Regulatory Compliance: Both components maintain ROHS3 compliance and identical moisture sensitivity ratings, satisfying supply chain and environmental requirements.

4. Product Status: WP710A10SEC/J3 carries active product status with 19,710 units in stock, compared to obsolete status of WP7104SEC/J2 with 743 units. Active status ensures long-term supply availability and manufacturing support.

Functional Consideration:

The substitute introduces a color shift from orange (630nm dominant) to red (625nm dominant). This substitution is valid only when the application circuit does not require orange-specific indication. If orange indication is functionally required, alternative orange-wavelength components from the WP710 series must be evaluated against the same critical parameters.

Performance Variance Assessment:

Millicandela rating variance of -3.6% (5300mcd versus 5500mcd) falls within typical manufacturing tolerance ranges and does not constitute a functional limitation. Viewing angle reduction from 34° to 30° represents a 4° narrowing of the light distribution cone, which may impact visibility in wide-angle viewing applications but remains within acceptable tolerance for standard indication applications.

Frequently Asked Questions (FAQ)

Q: Can WP710A10SEC/J3 be used as a direct replacement for WP7104SEC/J2 without circuit modification?

A: Yes, from an electrical and mechanical standpoint. Both components share identical forward voltage (2.2V), test current (20mA), physical dimensions (2.90mm diameter, 5.90mm height), and radial through-hole mounting configuration. No resistor or power supply adjustments are required. The only consideration is the color change from orange to red, which must be functionally acceptable in the application.

Q: What is the significance of the wavelength difference between 630nm and 625nm?

A: The wavelength-dominant specification defines the perceived color of the LED. 630nm produces orange light, while 625nm produces red light. This is a visual distinction, not an electrical one. Both wavelengths operate at identical electrical parameters. The substitution is valid only if red indication serves the same functional purpose as orange indication in the circuit design.

Q: Are there viewing angle differences that affect circuit performance?

A: The viewing angle difference (34° versus 30°) affects the light distribution cone but not electrical performance. A narrower viewing angle (30°) concentrates light output into a tighter cone, potentially reducing visibility from extreme angles but increasing brightness in the forward direction. This is a mechanical/optical consideration, not an electrical one. Evaluate based on the physical placement and intended viewing geometry of the application.

Q: Why is product status important for substitution?

A: Product status indicates supply chain availability and manufacturer support. WP7104SEC/J2 is obsolete, meaning Kingbright has discontinued production and will not manufacture additional units. WP710A10SEC/J3 is active, indicating ongoing production, long-term availability, and manufacturer technical support. For new designs or ongoing production, active-status components are preferred to avoid future supply disruptions.

Q: Can I substitute based on brightness (millicandela) alone?

A: No. While millicandela rating is an important performance parameter, substitution requires alignment of all critical parameters: electrical (voltage, current), mechanical (form factor, dimensions, mounting), and regulatory (RoHS, MSL). A component with identical brightness but different voltage or package would not be a valid substitute.

Q: What does ROHS3 compliance mean for substitution?

A: ROHS3 (Restriction of Hazardous Substances Directive 3) compliance indicates the component meets European environmental regulations restricting lead and other hazardous materials. Both the main part and substitute maintain ROHS3 compliance, ensuring they meet the same regulatory requirements and can be used interchangeably in supply chains requiring ROHS certification.

Q: Is the moisture sensitivity level (MSL) rating important for storage?

A: Yes. Both components carry MSL 1 (Unlimited), indicating they have no moisture sensitivity limitations. These components can be stored in standard warehouse conditions without special desiccant packaging or humidity control. This identical rating confirms no additional storage or handling procedures are required when substituting.